I have a question which might seem pretty dumb to some of you for which I apologise.
I used the 5v and gnd from the main 1-40 pins for the optical speed sensors but I need more 5v and gnd to simulate the sensors using potentiometers.Can I simply plug in the 5v and gnd to the rows on the left of the main 1-40 pins? Or do I need to connect the 12v power first? There's two rows on there with 5v and gnd.
Again, I apologise if this is a dumb question, I'm studying mechanical engineering and I'm not great with electronics
Thanks for help